Mixed transmission belt pack, real small transmission belt, this product is different from rubber band material, this product is specially for model small pulley transmission and production of model transmission belt. This belt pack is made of a variety of small belt lengths. Its circumferential diameter varies from 3 cm to 8 cm. Each bag has about 30 to 40 pieces.
Specification: The diameter of the outer circle of the belt ranges from 3 to 8 centimeters.
